[lld] [LLD][COFF] Allow overriding EC alias symbols with lazy archive symbols (PR #113283)

[Martin Storsjö via llvm-commits]

https://github.com/mstorsjo approved this pull request.

I think this looks fine, but I don't quite follow some of the explanations in a comment and in the commit message.

https://github.com/llvm/llvm-project/pull/113283